VNsnap: Taking Snapshots of Virtual Networked Infrastructures in the Cloud
| Autor: | Patrick Eugster, Dongyan Xu, Ardalan Kangarlou |
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| Rok vydání: | 2012 |
| Předmět: |
Downtime
Information Systems and Management Computer Networks and Communications business.industry Computer science Distributed computing Cloud computing computer.software_genre Computer Science Applications Hardware and Architecture Virtual machine Operating system Snapshot (computer storage) business computer Virtual network |
| Zdroj: | IEEE Transactions on Services Computing. 5:484-496 |
| ISSN: | 1939-1374 |
| Popis: | A virtual networked infrastructure (VNI) consists of virtual machines (VMs) connected by a virtual network. Created for individual users on a shared cloud infrastructure, VNIs reflect the concept of "Infrastructure as a Service” (IaaS) as part of the emerging cloud computing paradigm. The ability to take snapshots of an entire VNI-including images of the VMs with their execution, communication, and storage states-yields a unique approach to reliability as a VNI snapshot can be used to restore the operation of the entire virtual infrastructure. We present VNsnap, a system that takes distributed snapshots of VNIs. Unlike many existing distributed snapshot/checkpointing solutions, VNsnap does not require any modifications to the applications, libraries, or (guest) operating systems (OSs) running in the VMs. Furthermore, by performing much of the snapshot operation concurrently with the VNI's normal operation, VNsnap incurs only seconds of downtime. We have implemented VNsnap on top of Xen. Our experiments with real-world parallel and distributed applications demonstrate VNsnap's effectiveness and efficiency. |
| Databáze: | OpenAIRE |
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